Pumping mechanism



Jan. 14, 1941. J, K HADDAWAY 2,228,565

PUMPING MECHANISM FilSd Sept. 25, 1937 2 sheets-Sheet l Z/ 262.9 Z5 Z7 A TTRNEYS Jan. 14, 1941. J. K. HADDAWAY 2,228,565

PUMFING MECHANISM A Filed sept, 25, 1937 2 sheets-sheet 2 A TTOE/l Y5 Patented Jap. 14, 1941 UNITED rSTATES PATENT OFFICE z,zzs,5s5 1 i A PUMPING MEcnANlsM John K. Haddaway, Los Angeles, Calif. Application september z5, 1937, serial Np. 165,711 s Claims, (ol. 23o-55) mechanism, including electromagnetic means and f a resonant armature therefor, operatively connected to the pump, and having its period of vibration so correlated with the cycle of alternating current providing the electro-motive force, as to cause maximum vibration of the armature when the pump is subjected to a predetermined load, whereby to operate the pump at maximum efiiciency.

Another object of the invention is to provide an electromagnetically driven pump of the above described character wherein the resonant armature for the electromagnet can be of. a single or double type, with respect to which the electromagnet is so disposed as to obtain maximum power therefrom which is transmitted directly by the armature to the pump in a manner for the latter to be operated at maximum eillciency, all when alternating current at a predetermined cycle, for which th armature is tuned, is supplied to the electromagnet.

A further object of the invention is to provide an electromagnetically driven pump operating with alternating current vibrating a tuned, re'sonant amature to obtain exceedingly reliable and quiet operation without radio interference, and to insure long life and maximum efliciencyvindefinitely by the elimination of all such parts as would require servicing and attention.

A still further object of the invention is to 'provide an electromagnetically driven pump with which a sound filter or trap is associated by the provision of an enclosed, ilexible discharge conduit from the pump, to which the armature vibration and noise of the pumping impulses are con- View of one form of pumping mechanism embodying this invention; l

Figure 2 is a top plan sectional view taken on the line 2-2 of Figure 1;

Figure 3 is a bottom plan view, with a base section of the enclosing housing removed, and with a portion of the body section broken away to show otherwise concealed parts;

Figure 4 is a vertical longitudinal sectional view of a modified form of pumping mechanism embodying this invention;

Figure 5 is a top plan sectional view taken on the line 5--5 of Figure 4; and showing portions of the mechanism beyond the plane of the section, broken away;

Figure 6 is a bottom plan view of the modified form of pumping mechanism, with a base section of the enclosing housing removed, and with a portion of the body section broken away to show otherwise concealed parts.

Referring specifically to the drawings, and particularly to Figures 1 to 3, inclusive,.this form of' the invention comprises a rectangular housing I0 of wood or other suitable material, having a base section II to which an inverted cup shaped body section I2 is secured by screws I3. The pumping and electromagnetic driving means therefor form a unitary structure supported in the body section I2, and comprise a` rigid metal base plate I4, the ends of which are embedded in sponge rubber pads I6I6 forced snugly into the body section I2 so as to provide a cushioning mounting for the aforestated structure.' FixedA to the base plate Il, is the U-shaped core I'lof an electromagnet I8 the winding I9 of which is wound upon one branch of the core for electromagnetic co-action therewith. Alternating current as generally supplied to domestic consumers, is adapted to be supplied to the winding I9 by conductors 20-20 which pass through a suitable opening in the body section.

A bar armature 2|, of flexible, fiatstrip magnetic metal, has one end thereof angularlyvbent 'varied by weights 23 slidably mounted on ythe armature for movement along the length thereof, and securable in any adjusted position by set screws 24.

Between the electromagnet I8 and the free end of the armature 2| the latter is operatively connected directly to a pump 25 comprising a circular cup-shaped casing 26 fixed to the base plate |4 and co-acting with a ring 21 and screws 28 to secure a resilient rubber diaphragm 29 to the casing to form a flexible wall thereof. At opposite sides of the diaphragm 29 are metal disks 30-30 through which passes a rigid operating rod 3| secured to the disks by nuts 32-32 threaded on the rod at the opposite sides of the disks, whereby to also clamp the diaphragm between the disks. The other end of the rod 3| issecured in any suitable manner at 33 to the armature 2| adjacent the free end thereof, so that when the armature is vibrated, its vibratory movement will be transmitted to the rod 3| and thus correspondingly vibrate the diaphragm.

The casing 26 is provided with an intake port 34 and a discharge port 35, respectively, controlled by spring loaded check valves 36 and 31 so that when the diaphragm is vibrated, air will be drawn through the port 34 into the chamber 38 defined by the casing and diaphragm, and will be forced from the chamber through the port 35, whereby to effect a pumping action.

Communicating with the port 35 is a flexible discharge conduit 39 in the form of a. length of resilient rubber hose which is coiled freely in the housing I0 and passes through an opening in one of the padsV I6 for connection to one end of a metal tube 40 supported in an end wall of the body section l2. To the other end of the tube 40, a suitable conduit 4| is connected and is adapted to conduct the air from the pump to a point of use.

At its outlet end, the discharge conduit 39 is provided with a plug 42 of felt or other suitable porous material which coacts with the conduit to confine thereto the pumping impulses, and to absorb the vibration of the pump. It will be appreciated that the conduit 39 will slightly expand and contract at each pumping impulse, due to the resistance offered by the plug 42 to the free passage of air which will thus be discharged into the conduit 4| in a continuous stream. As the conduit 39 is enclosed within the housing I0, the noise of the pumping impulses in the tube will be effectively muilled.

In the ,operation of the invention, the period of vibration of the resonant armature 2| is varied by suitable adjustment of the Weights 23, until the number of vibrations in a unit of time conforms to the number of reversals in the cycle of alternating current employed, this adjustment being effected when the pump is placed under a predetermined working load, so as to obtain maximum operating efficiency from the pump. In using sixty cycle current, the number of vibrations per second to which the armature is tuned, will be one hundred twenty per second, which tuning will be attained by checking against the operating efficiency of the pump under a predetermined working load.

Reference will now be had to Figures 4 to 6, inclusive, in which is shown a second form of the invention embodying a double type resonant armature instead of the single type previously described.

This form of the invention comprises a rectangular housing Illa of wood or other suitable material, composed of a base section la to which an inverted cup-shaped body section |2a is secured by screws |3a. As in the previously described form of the invention, the pumping and electromagnetic driving means therefor form a unitary structure supported in the body section |2a, and comprise a rigid L-shaped metal base plate I4a, the ends of which are embedded in sponge rubber pads |6a|6a forced snugly into the body section |2a so as to provide a vibration absorbing mounting for the structure. Fixed by a screw 43 to the base plate, at onevend thereof, is a resonant armature 44 of magnetic metal which has the generally U-shaped contour of a tuning fork so as to provide parallel arms 45-45 and a portion 46 connecting the arms at one end thereof. As the connecting portion is directly secured by the screws 43, to the base plate, the arms 45 are supported to freely vibrate.

Fixed to th'e base plate between the arms 45, and adjacent the connecting portion 46, is an electromagnet 41, the ends of whose core 48 are disposed in magnetizing relation to the arms. Alternating current as generally supplied to domestic consumers is adapted to be supplied to the winding 49 of the electromagnet 41 by conductors 50-50 (Figure 6) which pass through a suitable opening in the body section |2a of the housing. I'he period of vibration of the arms 45 can be varied by weights 5|-5| slidably mounted on the arms for adjustment along the lengths thereof, and securable in any adjusted position by set screws 52-52.

Disposed between the arms 45 and between the electromagnet 41 and the free ends of the arms, is a pump 53 including a valve body 54 fixed to the base plate 4a and defining a chamber 55 having an intake port 56 and a discharge port 51 at opposite ends. A filtering and silencing plug 58 of felt or other suitable material spans the intake port 56, and spring loaded check valves 59 and 60, respectively, control the ports, as clearly shown in Figure 4.

Between the ports 56 and 51, the chamber is provided with a port 6| defined by a metal tube 62 having a sealed vconnection with the breather chamber 63 of a iiexible bellows 64 of circular form. This bellows can be constructed of resilient rubber, and has its flexible side walls 65-65 connected rigidly to the arms 4,5-45 by threaded rods 66-65 secured to the arms by pairs of nuts 61-61, and to the respective walls 65-65 by nuts 6968 and pairs of metal disks 69-69 between which the walls 65 are clamped.

The rods 66 are co-axially related to each other and are connected to the walls 65 axially thereof so as to co-act with the bellows in effecting a pumping action in the breather chamber 63 in response to vibration of the arms 45.

Communicating with the port 51 is a flexible discharge conduit 10 in the form of a length of flexible rubber hose which is coiled freely in the housing Illa and passes through an opening in one of the pads I6a for connection to one end of a metal tube 1| supported in an end wall of the body section |2a. To the other end of the tube 1| a suitable conduit 12 is connected and is adapted to conduct the air from the pump to a point of use.

At its outlet end the conduit 16 is provided with a plug 13 of felt or other suitable material.

As the conduit 16 functions in a manner identical to that of the conduit 39 in the first described form of the invention,"further detailed descrip tion will be dispensed with.

The operation of this form of the invention is as follows:

By adjustment of the weights 5|, the period of vibration of the resonant arms 45-45 is made to conform to the number of reversals in the cycle of alternating current supplied to the elecreducing the capacity oi the breather chamber 63 and forcing air from the valve chamber i5 through the discharge port 51. As the current flow in the winding recedes to zero, the ilexibility of the resonant arms causes them to simultaneously move away from each other and thus expand the bellows 64 to increase the capacity oi the breather chamber 83 and suck air into the valve chamber 55 through the in take port 58. This operation is repeated upon each reversal of current in the winding I9 so as to effect a pumping action upon the air, the pumping impulses being absorbed in the coiled conduit 1II so as to deliver a continuous stream of air to the conduit 12 for use as desired.

What is claimed is:

1. In pumping mechanism, an electromagnet; a U-shaped bar armature, between the spaced arms of which the electromagnet is disposed with the ends of its core in magnetizing relationship to said arms; means anchoring said armature at its closed end, with said arms free to be vibrated simultaneously and oppositely in response to the supply of variable current to the winding oi' the electromagnet; a pump disposed between said arms, and having a breather chamber provided with oppositely disposed movable walls:

and means operatively connecting said movable.

walls to said arms. to expand and contract the breather chamber in response to vibration of the arms as aforestated.

2. In pumping mechanism, a base; an electromagnet supported by the base; a U-shaped resonant bar armature supported at its closed end by the base, with said electromagnet disposed between the spaced arms of the armature in magnetizing relationship thereto so as to 4vibrate the arms simultaneously and oppositely in response to the supply of variable current to the electromagnet; a pump disposed between said arms' and including a plurality of relatively movable means operable to effect a pumping4 action when moved; and means operatively connecting the arms of the armature to said movable means of the pump to actuate'same in response to vibration or the arms.

3. In pumping mechanism. a base; an electromagnet supported by the base; a U-shaped resonant bar armature supported at its closed end by the base, with said electromagnet disposed between the spaced arms of the armature in magnetlzing relationship thereto so.as to vibrate the arms simultaneously and oppositely in response to the supply of' variable current to the electromagnet; a pump including a valve chamber supported by the base. and a breather cham-- ber in communication with the valve chamber and having movable walls and means operatively' connecting the movable walls oi the breather vchamber to said arms so as to expand and contract the breather chamber alternately in response to vibration of the arms.

4. In pumping mechanism, a base: an electromagnet supported by the base; a U-shaped resonant bar armature supported at its closed end by the base, with said el'ectrmagnet disposed between -the 'spaced arms of the armature in magnetizing relationship thereto so as to vibrate the arms simultaneously and oppositely in response to the supply of variable current to the electromagnet; a pump including-a valve chamber supported by the base, and a breather chamber in communication with the valve chamber and having movable walls; and rigid members co-axially arranged and secured to said movable o walls and to said arms so as to expand and contract the breather chamber in response ta vibraltion of the arms.

5. In pumping mechanism, an armature having spaced arms; means mounting the amature for vibration of said arms; an electromagnet in magnetizing relationship to said arms to vibrate the latter in response to the supply of variable current to the electromagnet; a pump including a plurality of movable means operable to eiiect a pumping action when moved; and means operatively connecting said arms to said movable Y means of the pump to actuate same in response JonN x. nADDAwAY. 

